Additional file 6.

Classification of cis-NAT pairs. We analyzed 84 Arabidopsis and 119 rice cis-NAT pairs that have more than 10 raw siRNAs mapped to the overlap region. The reads
analyzed here are the raw sequencing reads mapped to the whole region from the combination
of all libraries. (a) Arabidopsis cis-NAT pairs display different distribution patterns. (b) Rice cis-NAT pairs display different distribution patterns.